To amend title 4, United States Code, with respect to the flying of the National flag at half-staff pursuant to the order of a Governor of a State, territory, or possession.

Amends federal law with regard to the flying of the national flag at half-staff to: (1) allow a governor of a state, territory, or possession of the United States (governor) to proclaim that the national flag be flown at half-staff upon the death of a member of the Armed Forces from the governor's state, territory, or possession who dies while serving on active duty; and (2) require, when a governor issues such a proclamation, the national flag flown at any federal installation or facility in that state, territory, or possession to be flown at half-staff consistent with that proclamation.